Container wall closure combinations and assemblies



Nov. 9, 1965 c. w. DEARING CONTAINER WALL CLOSURE COMBINATIONS ANDASSEMBLIES 3 Sheets-Sheet 2 Filed Aug. 16, 1962 INVENTOR CLA REA/CEh/DEAR/NG- AT TORNEY.

Nov. 9, 1965 c. w. DEARING 3,216,632

CONTAINER WALL CLOSURE COMBINATIQNS AND ASSEMBLIES Filed Aug. 16, 1962 5Sheets-Sheet 3 INVENTOR. CLARENCE 14 DEA/ewe A TTOHNEY United StatesPatent 3,216,632 CONTAINER WALL CLOSURE CGMEENATIBNS AND ASSEMBLIESClarence W. Bearing, Short Hills, NJ assignor to American Flange &Manufacturing (10., Inc, a corporation of Delaware Filed Aug. 16, E62,Ser. No. 217,483 12 Claims. (Cl. 222541) This invention relates toclosures for containers and is particularly concerned with the provisionof closures for large containers, which closures can be applied afterthe containers have otherwise been completed and filled.

This application is a continuation-in-part of my presently allowedco-pending application Serial No. 702,698 now abandoned which disclosesa particular opening neck formation in a container wall having a closureassembly secured thereto. This invention differs from that disclosed inthe parent application in that, besides disclosing various other closureassemblies secured to said neck formation, the securing formation of theclosure assembly has been modified so that the entire assembly can bemore efiectively secured to the opening neck after the container hasbeen filled. This arrangement has the advantage of allowing themanufacturer of large con tainers such as pails, buckets, drums and thelike, to snap a light, inexpensive, dust cap over the container openingfor shipment thereof to the filler who can then remove the dust cap,fill the container utilizing the largest opening size possible, and, asthe last operation, secure a suitable closure assembly to the openingneck.

As disclosed in my parent application Serial No. 702,- 698, it wasthought necessary under certain conditions to provide an annular recessin the upper surface of the closure assembly furnishing space for thereception of a back-up anvil on the tool which clinches the assemblyonto the neck formation and against which the securing formation and theneck formation are squeezed in the clinching operation. In manyinstances an annular recess in the top surface of a closure assembly isa highly undesirable feature. Such a configuration serves to accumulatewater or other foreign matter which may eventually rust or otherwiseharm the closure or gain access to the contents of the container uponthe opening thereof.

One possible solution to the problem is to clinch on a closure flangeand plug assembly having an annular recess for a back-up anvil and thenclinch a separate cap seal over the subassernbly. However, thisarrangement besides requiring two separate operations, also requires theuse of two different tools and hence becomes impractical for economicreasons. Another possible solution to the problem of how to effectivelyclinch a closure assembly onto on opening neck formation, is to deformthe neck formation and outer wall of the assembly securing formationinwardly together. This arrangement also has its disadvantages, the mostobvious one being that once a closure assembly has been secured inplace, the neck has been permanently deformed so as to preclude reusethereof.

With the present trend toward the use of lighter gauge metal for largecontainers, the need is becoming increasing acute to provide inexpensivelightweight closures which are compatible costwise with such containers.The design and application of the instant closure are such that if,after the contents of the container have been dispensed and thecontainer has been reconditioned, the application of a new closureassembly is desired or necessary for reuse of the container, the initialclosure flange can readily be pried off of the neck formation with aspecial tool. This can be done without any deleterious deformation ofthe neck, whereupon the container can be refilled and another closureassembly applied thereto. Another disadvantage of constructions Wheredeformation of the opening neck is effected in the clinching opera tionis that such arrangements normally necessitate beginning with an openingneck having a vertical outer wall. Such a configuration is not at allsuited for the effective securing of a dust cap thereon which is animportant factor particularly when the container may be stored for asubstantial period of time between the manufacture and the fillingthereof.

The closure assembly of the instant invention solves the above mentionedand other problems by cooperating with the opening neck formationdisclosed in Serial No. 702,698 in such manners as to effectively clincha closure, presenting a flat upper surface, onto a container without anydeformation of the opening neck. This operation involves but a singlestep employing one sealing tool and results in a lightweight closurehaving structural qualities heretofore thought possible only in muchheavier type closures. Further the instant closure assembly is sodesigned as to provide a high degree of radial rigidity to withstand thesevere stresses frequently applied thereto in the clinching operation orupon subsequent impact in the field.

It is accordingly a primary object of this invention to simplify thefabrication of containers so as to eliminate a substantial part of thework heretofore imposed on the container manufacturer in the provisionof closures therefor.

Another object is to provide a container closure whereby such containercan be filled through its maximum opening diameter and the closuresubsequently applied by the filler.

Another object is to provide a completely assembled tamper-proofcontainer closure which may be quickly and effectively applied to acontainer wall opening formation by the filler of the container.

A further object is to provide an assembled container closurecombination presenting a flat upper surface which may be clinched onto acontainer wall opening neck without the use of a back-up anvil.

A still further object is to provide for the clinching of an assembledcontainer closure onto a container opening neck without deforming suchneck.

A still further object is to provide a structurally rigid closureassembly which can take a number of different forms depending on thecontainer contents and the manner of dispensing preferred.

A more detailed object is to provide a structually rigid containerclosure presenting increased resistance to radial deformation across thecontainer wall opening.

Further and more detailed objects will in part be obvious and in part bepointed out as the description of the invention, taken in conjunctionwith the accompanying drawing, proceeds.

In that drawing:

FIG. 1 is a part elevation, part sectional exploded view of a containerwall closure assembly in accordance with the invention.

FIG. 2 is an enlarged fragmentary section of a portion of the containerwall closure assembly in unclinched position.

FIG. 3 is a top plan view partially cut away of the closure assembly.

FIG. 4 is a top in FIGS. 1 and 2.

FIG. 5 is a part elevation, part sectional view of a modified form ofclosure plug.

FIG. 6 is a part elevation, part sectional view of the container openingneck formation of FIG. 1 with a temporary dust cap thereon.

FIG. 7 is an elevation having a portion cut away showplan view of theclosure plug employed in fluid form which upon curing becomes aresilient gasket and takes the form indicated by numeral 39 in FIG. 2.This gasket conforms to and cooperates with the upper rounded endportion 9 of the opening formation 6 to provide an effective sealagainst leakage between the flange and the container wall.

In FIG. 12 the closure assembly is shown crimped onto the opening neckformation by an operation subsequently to be described, however, thespecific cooperation between the closure assembly and the opening neckformation is to be noted here. The particular design of the securingformation 12 of the closure flange 1 is such that the first verticallyupwardly extending portion 13 contacts the inwardly radiused surface ofthe curved single thickness portion 7 of the opening neck formation asindicated by numeral 49. Then the upwardly and outwardly inclined secondportion 14 of the securing formation is parallel to and in overlyingengagement with the inwardly facing surface of the frusto conical neckportion 10. It can be clearly seen in FIG. 12 that when the closureassembly is clinched onto the neck, the securing formation of the flangetightly engages the neck formation around its entire periphery resultingin structural characteristics heretofore found present only in closuresformed of much heavier material. Not only does the presently disclosedconfiguration of the flange securing formation provide an improved sealagainst leakage but in addition the opening neck is reinforced aroundits entire periphery by another layer of material providing an extremelyrigid protective wall around the closure.

A feature of major importance in this invention and as seen in FIGS. 2and 12 is that the container wall 4, the annular flange web 17, and thelower portion of the head 22 of the closure plug, all lie in a commonhorizontal plane. The purpose of this specific arrangement is to providea rigid continuous wall across the entire container wall closureassembly combination. It should be kept in mind that the closure of thepresent invention is designed for use on large steel drums of the 55gallon type although not limited thereto. Closures employed in suchcontainers must be strong enough to withstand the impact impartedthereto when such containers are dropped from a height of several feet.This type of drop test" must be met before a closure can be recognizedas commercially acceptable. Having in mind the severe stresses which aclosure of this type must withstand, it can be readily appreciated thatthe concept of having a continuous co-planar surface across the entireclosure assembly is of substantial merit. With the above describedrelationships, a degree of strength and rigidity is achieved such as toresult in a highly improved closure.

Another major feature of the present invention resides in the manner inwhich the closure assembly is applied to the container wall opening.FZGS. 710 illustrate this operation which is essentially the same asthat disclosed in application Serial No. 702,698 in fact FIGS. 7 and 8are taken from that application so as to clearly show the improvement ofthe additional material disclosed herein thereover. FIG. 7 illustrates atool for applying closure assemblies of the type generally hereindescribed which may be manually or power operated and in either case hasas its main parts a closing sleeve 41, a plurality of closing jaws 42each of which has an engaging ledge 43 and a pressure pad 44. Thepressure pad 44, as here shown, has an engaging surface 45 formed with aback-up anvil 46 which extends inwardly behind the securing formation 47so as to oppose the engaging ledges 43. In the operation of the tool thesleeve 41 is urged downwardly so as to bear against the jaws 42 urgingthe latter inwardly toward the back-up anvil 46 of the pressure padhence clinching the securing formation 47 inwardly around the neck 6.

As distinguished from the arrangement just described and employed inapplication Serial No. 702,698, FIG. 9 shows the closure assembly of theinstant invention being applied to a container wall opening by means ofa tool generally of the type shown in FIG. 7. In this instance however,the tool has a fiat bottom engaging surface 48 on the pressure pad 44which surface bears on the flat upper surface of the capseal of theclosure assembly. In many instances it is highly undesirable to have anannular recess behind the securing formation to facilitate use of aback-up anvil. Such a configuration serves to accumulate water or otherforeign matter which may rust or otherwise harm the closure. Also anyaccumulation of dirt in the closure assembly may gain access to thecontainer when it is opened which is obviously a highly undesirablesituation.

The problems that arise in providing a closure assembly which can beapplied without the use of a back-up anvil are substantial. A closureassembly of the type disclosed in application Serial No. 702,698 is notsuited for application to an opening formation by a tool having a flatpressure pad because, in that instance, as readily seen from FIGS. 7 and8, there is not enough radial support in the dispensing opening againstradial inward collapse. Consequently the result is a deformation of thethreaded neck so that the screw cap cannot be properly secured thereto.The arrangement of the instant invention wherein the container wall 4,the flange web 17 and the portion of the plug head 22 form a rigidco-p1anar wall, completely eliminates any distortion of the assemblywhen applied with a tool having a fiat pressure pad. Furthermore themanner in which the securing portions 13 and 14 cooperate with the neckformation 6 enables the closure assembly to be positioned tightly inengagement with the opening neck by means of a purely vertical forceapplied through the engaging surface 48 and adds sufiicient rigidity tothe neck formation so that the capseal wall 28 and outer securingformation wall 16 can be crimped inwardly simultaneously around the neckformation 6 as shown in FIG. 13 without any deformation of that neckformation.

It has been found that with the securing formation de scribed herein, asdistinguished from that shown in application Serial No. 702,698, aclosure assembly can be effectively clinched onto an opening neckwithout the use of a back-up anvil and without any damaging distortionof the assembly or neck. Another advantage of the instant inventionresides in the fact that although the above described closure isprimarily intended to satisfy a need in the field of lightweight singletrip drums, it is also contemplated that this closure will findacceptance in drums intended for reuse. For the latter purpose, ifdesired, the instant closure flange can be easily pried off of the neckformation with a hand tool without causing any damaging distortion ofthe neck formation whereupon a new closure assembly can be reapplied.This is possible because no deformation of the opening neck has takenplace when the closure assembly is secured thereto; a feature thoughtnecessary in some of the prior art arrangements. Reuse would beprecluded if the neck were also deformed in the applying operation.Another advantage of this particular opening neck formation asdistinguished from one that is initially straight and subsequentlydeformed inwardly in the closure application is that a dust cap such asshown in FIG. 6 may be easily and securely snapped thereover for thepurpose set forth earlier.

A modified form of the invention is embodied in the showings of FIGS. 13and 14. These are particularly adapted for use in containers which areinteriorly coated or lacquered to prevent the contents thereof fromcoming in direct contact with the container walls. In such containers itcan be readily appreciated that the closure assembly used therewithwould also require a similar coating to completely avoid contamination.In the embodiments of FIGS. 13 and 14 the closure plug 50 has a gasketing means located on the bottom surface thereof which cooperates witha gasketing portion 51 located at the lower end of the flange neck 52.The gasketing portion 51 comprises an inwardly and upwardly turnedportion forming an integral annular groove at the base of the flangeneck. In the FIG. 13 embodiment the lower wall portion 53 of the plasticplug engages the upwardly disposed inner edge 54 of the portion 51 anddeforms thereover to form a tight seal therewith. This arrangementeliminates the necessity of coating the interior portion of the flange.Also the flange neck has a coarser and less abrupt thread form thereonresulting in better coverage thereof in the coating process. Theremainder of the flange cooperates with the opening neck formation asdescribed above. The FIG. 14 embodiment shows a gasket 55 flowed intothe annular groove 51 which gasket is engaged by a reduced lower wallportion 56 on the closure plug forming an effective leakproof sealtherebetween.

FIGS. 15 and 16 show a further modification wherein the closure flange60 is formed of a synthetic plastic material of which polyethylene is anon-limiting example. The form of the securing portion 61 is the same asthe metal embodiments except that the web 62 is thicker. However, fromthe FIG. 16 showing, it will be apparent that the concept of having thecontainer wall 4, the web 62, and the head 63 of the plug all lying in acommon plane is carried through all of the various embodiments. Thesecuring portion 61 is secured onto the neck forma tion 6 by means of anoverlying metal sealing ring 64 which is shown expanded in FIG. 15 andcrimped inwardly in FIG. 16. It can be seen in FIG. 15 that the securingformation 64 has an inwardly projecting lip 65 at the lower edge of itsouter peripheral wall 66. This lip insures a tight seal against the backof the neck formation 6 when urged inwardly by the sealing ring 64.

This embodiment, instead of having an overlying capseal, is providedwith a rupturable diaphragm 67 (see FIG. 16) across the bottom of theflange which can be simply punctured and torn out to gain access to thecontents of the container. The diaphragm 67 is formed in tegrally withthe flange 60 and has an annular weakened portion 68 to facilitatetearing. Also, a thin resilient finger grip 69 is molded integrally withthe diaphragm and has an enlarged portion 70 to enhance the users gripthereon. In FIG. 16 it can be seen that the grip 69 is resiliently urgeddownwardly by the bottom surface of the plug when the latter isthreadedly engaged within the flange.

The closure plug 7-1 has a threaded side wall 72 which terminates in abottom surface 73. This surface 73 may form a seal with the annularportion 74 outside of the weakened section 68 which remains in theflange after the diaphragm is removed hence eliminating the need for aplug gasket.

In the embodiment of FIG. 18, the weakened section 75 is located at theouter periphery of the diaphragm hence requiring a plug gasket 76 toseal off the opening once the diaphragm has been destroyed. Thisarrangement however has the advantage of providing a larger openingthrough which the contents of the container can be dispensed.

A further modification is disclosed in FIGS. 19 and 20 wherein theclosure assembly is similar to that of FIG. 15 in that the flange isformed of a plastic material, but instead of a rupturable diaphragmacross the dispensing opening the latter is provided with a retractablepull-up spout 76. In FIG. 19 the spout is shown in lowered positionwhere it is held from dropping into the container by means of anoutwardly projecting lip 77 at the upper end of the spout cooperatingwith an annular web 78 having an upwardly turned portion 79 formedintegrally with the lower end of the flange neck. The spout 76 is shownin its raised or pouring position in FIG. 20 where it is rigidly held bythe cooperation of an annular formation 80 at the lower end thereof withthe upwardly turned flange neck portion 79. The formation 80 comprises apair of ribs 81 and 8 2 which, with the slightly radially enlargedcylindrical base surface 83, define a groove which may be snapped overthe upwardly turned portion 79 at the inner periphery of the flange baseto form a tight joint therewith. Here again, as in the FIG. 15modification, the closure plug 84 has a threaded side wall 8 5terminating at its lower end in a reduced portion 86 which engages theupper surface of the annular web 78 so as to form a seal therewith. Withthis sealing arrangement a plug gasket 87 is optional.

In this form of the invention the closure assembly is renderedtamper-proof by the provision of a lightweight capseal 88 (see FIG. 21)preferably formed of a plastic material and having a flat top 89, a'laterally extending side wall 90, and a radially outwardly projectingannular portion 91 extending from the edge of the side wall 90. Thiscapseal is formed so as to overlie the closure plug with the portion 9 1being tightly held between the downwardly facing end edge 92 of thesealing ring 93 and the annular flange surface 94. FIG. 20 shows thecapseal partially torn away permitting access to the closure plug whichcan then be removed and the spout raised to its pouring position.

Since numerous variations and modifications of the container wallclosure assembly combination herein shown and described will readilysuggest themselves to those skilled in the art, it is to be understoodthat changes may be made in the construction described and shown andvarious embodiments of the invention can be made without departing fromthe scope thereof. It is accordingly intended that all matter containedin the above description or shown in the accompanying drawing shall beinterpreted as illustrative and not in a limiting sense.

Having described my invention what I claim is new and desire to secureby Letters Patent is:

1. A container wall closure assembly combination which comprises acontainer wall formed with a large standard opening therein and aclosure assembly secured thereto, said standard opening having abordering formation in the form of a neck formed integrally from thestock of said container wall surrounding said opening, said opening neckincluding a first portion of a single thickness of container wallextending upwardly from said container wall and a second portion formedas an extension of said first portion and having a double thickness ofsaid container wall material, said second portion having an upwardlyextending first part, a rounded upper end and an inwardly extendingsecond part extending downwardly and inwardly from said rounded end,said first portion of said opening neck being curved outwardly and saidsecond portion extending outwardly from said curved portion in frustoconical form at an angle of substantial extent with respect to the axisof said opening, said closure assembly having a securing formationsecured to said opening neck and being capable of providing varioussizes and types of pouring openings and closures therefor 'within theconfines of said standard opening and said assembly being formed forapplication in secured sealed relationship to said opening neck from theoutside of a completed container after the same is filled, said closureassembly including a closure flange and a closure removably securedthereto, said flange being formed as an annular member and said securingformation forming the peripheral portion of said flange, said securingformation having an upwardly extending inner portion overlying therounded upper end of said opening neck, an outer portion extendingdownwardly from said upper portion in tight engagement with the outerportion of said opening neck to form a tight joint between said neck andsaid securing formation on the outer side of the wall of said container,annular gasket means compressively engaged between confronting annularzones of the securing formation and the opening neck of the container,an annular web extending integrally radially inwardly from said securingformat-ion, the inner portion of the securing formation has a first partwhich rises from the outer edge of the web substantially normal theretoand a second part of generally frusto conical shape which is parallel toand closely overlies the frusto conical inner surface of the innersurface of the opening neck of the container, a neck formed with adispensing opening therethrough, said neck extending from the radiallyinnermost portion of said 'web and in spaced relation to said securingformation, a gasketing portion integral with said neck, a gasketengaging said gasketing portion, said closure including means forengaging said gasket for effecting a leak-proof olnt between the closureand the neck of the flange of the closure assembly.

2. A container wall closure assembly combination as in claim 1, whereinthe outer edge of the web of the closure flange is in substantialengagement with the container wall at the junction therewith of thefirst portion of the opening neck of the bordering formation, and theweb lies substantially coplanar with the part of the container wallimmediately surrounding said opening neck.

3. A container wall closure assembly combination as in claim 1, whereinthe said closure is a plug having a threaded sidewall and the gasketingportion of the neck of the flange is located adjacent the inner edge ofthe web.

4. A container wall closure assembly combination as in claim 3, whereinthe gasketing portion of the neck of the flange and the means on theclosure plug for engaging the gasket present therebetween agasket-receiving seat which decreases in cross sectional area as theclosure plug is tightened toward fully engaged tightened position,whereby the gasket is then strongly compressed into said seat and exertsa strong radially outwardly directed force upon the web.

5. A container wall closure assembly combination as in claim 3, whereinthe closure plug has a radially enlarged head in substantial engagementwith the inner surface of the junction between the inner edge of the weband the gasketing portion of the neck of the flange when the closureplug is in fully engaged tightened position.

6. A container wall closure assembly combination as in claim 1, whereinsaid closure is a plug having a threaded sidewall and the gasketingportion of the neck of the flange is located closely adjacent the inneredge of the Web, said gasketing portion is in the form of a downwardlyand inwardly tapering frustum of a cone, and wherein when the closureplug is in fully engaged tightened condition the gasket is stronglycompressed against the gasketing portion of the neck of the flange andexerts a strong radially outwardly directed force upon the web, theassembly being so constructed and arranged that with the closure plug insuch fully engaged tightened position the outer edge of the headsubstantially fits within and engages the upper, larger diametered endof the frusto conical gasketing portion of the neck of the flange.

7. A container closure assembly adapted to be secured to a largestandard size container wall opening having an upstanding neck formationtherearound, comprising a closure flange and a closure plug securedtherein, said flange formed as an annular member and having a securingformation forming the peripheral portion of said flange, said securingformation having a first vertically upwardly extending portion, a secondportion extending upwardly and outwardly from the upper end of saidfirst portion, a rounded upper portion and an outer portion extendingdownwardly from said upper portion adapted to be formed inwardly aroundthe opening neck formation, an annular surface extending integrallyradially inwardly from the lower end of said first portion of saidsecuring formation, a screw threaded neck formed with a dispensingopening therethrough extending from the radially innermost portion ofsaid annular surface and a gasketing portion integral with said neckbelow said annular surface for the leakproof engagement of said closureplug therewith, said closure plug including means for engaging saidgasketing portion for effecting a leakproof joint and said closure plugbeing formed with a side wall threadedly engaged with the threads ofsaid screw threaded neck, the radial extent of said annular surfacedetermining the size of said dispensing opening through said screwthreaded neck whereby containers equipped with standard openingsavailable for fast filling of the containers and after filling will havethe desired size and type of assembly applied to close said openingwithin the confines of said larger standard opening.

8. A container wall closure assembly as in claim 7, wherein saidgasketing portion integral with said neck includes an inwardly andupwardly turned portion forming an annular groove at the base of saidneck and the base of said plug side wall forming said engaging means.

9. A container wall closure assembly combination which comprises acontainer wall formed with a large standard opening therein and aclosure assembly secured thereto, said standard opening having abordering formation in the form of a neck formed integrally from thestock of said container surrounding said opening, said opening neckincluding a first portion of a single thickness of container wallextending upwardly from said container wall and an inwardly doubled oversecond portion formed as an extension of said first portion andextending outwardly and upwardly from said first portion in frustoconical form at an angle of substantial extent with respect to the axisof said opening, said closure assembly including a closure flange and aclosure plug secured therein, said flange formed as an annular memberand having a securing formation forming the peripheral portion of saidflange, said securing formation having an upwardly and outwardlyextending inner portion overlying the frusto conical inner surface ofsaid opening neck, an upper portion overlying the upper end of saidopening neck and an outer portion extending downwardly from said upperportion in tight engagement with the outer portion of said opening neckto form a tight joint between said neck and said securing formation onthe outer side of the wall of said container, an annular web extendingintegrally radially inwardly from said securing formation, a screwthreaded neck formed with a dispensing opening therethrough extendingdownwardly from the radially innermost portion of said web and in spacedrelation to said securing formation and a gasketing portion integralwith said neck adjacent the inner edge of said web for the leakproofengagement of said closure plug therewith, said closure plug includingmeans for engaging said gasketing portion for effecting a leak-proofjoint, said closure plug being formed with a side wall threadedlyengaged with the threads of said screw threaded neck and a radiallyoutwardly projecting head forming the upper extent of said plug sidewell, said plug head acting to urge said engaging means into tightsealing engagement with said gasketing portion when said closure plug isin fully tightened position.

10. A container wall closure assembly as in claim 9, wherein said flangeis formed of a synthetic plastic material and includes a metal sealingring overlying said securing portion.

11. A container wall closure assembly as in claim 9 and including areadily destructible tamperproof seal overlying said closure plug andforming part of said assembly so as to be secured to said opening neckformation simultaneously therewith.

12. A container closure assembly adapted to be secured to a largestandard size container wall opening having an upstanding neck formationtherearound, comprising a closure flange and a closure plug securedtherein, said flange formed as an annular member and having a securingformation forming the peripheral portion of said flange, said securingformation having an upwardly and outwardly extending inner portion, arounded upper portion and an outer portion extending downwardly fromsaid upper portion adapted to be formed inwardly around the opening neckformation, an annular web extending integrally radially from the lowerend of said first portion of said securing formation, a screw threadedneck formed with a dispensing opening therethrough extending downwardlyfrom the radially innermost portion of said web and a gasketing portionintegral with said neck for the leakproof engagement of said closureplug therewith, said closure plug including means for engaging saidgasketing portion for effecting a leakproof joint, said closure plug:being formed with a side Wall threadedly engaged with the threads ofsaid screw threaded neck and a radially outwardly projecting headforming the upper extent of said plug side wall, said plug head and saidannular web lying in a common plane so when said closure assembly issecured to an opening neck formation, a continuous rigid horizontal wallis formed between the closure plug and the container wall, the radialextent of said annular web determining the size of said dispensingopening through said screw threaded neck whereby containers equippedwith standard openings will have the full areas of said standardopenings available for fast filling of the containers and after fillingwill have the desired size and type of assembly applied to close saidopening within the confines of said larger standard openings.

References Cited by the Examiner UNITED STATES PATENTS 942,847 12/09Truesdale 222-436 1,620,024 3/27 Mothersall 222-536 2,231,412 2/41McCarthy 222320 2,545,178 3/51 Vaughn 222-525 2,661,128 12/53 Rieke222541 X 2,772,037 11/56 Rieke 222541 X 2,840,280 6/58 Bee 222-5252,906,429 9/59 Marchyn 220-39 LOUIS J. DEMBO, Primary Examiner.

EUGENE F. BLANCHARD, Examiner.

1. A CONTAINER WALL CLOSURE ASSEMBLY COMBINATION WHICH COMPRISES ACONTAINER WALL FORMED WITH A LARGE STANDARD OPENING THEREIN AND ACLOSURE ASSEMBLY SECURED THERETO, SAID STAND OPENING HAVING A BORDERINGFORMATION IN THE FORM OF A NECK FORMED INTEGRALLY FROM THE STOCK OF SAIDCONTAINER WALL SURROUNDING SAID OPENING, SAID OPENING NECK INCLUDING AFIRST PORTION OF SAID SINGLE THICKNESS OF CONTAINER WALL EXTENDINGUPWARDLY FROM SAID CONTAINER WALL AND A SECOND PORTION FORMED AS ANEXTENSION OF SAID FIRST PORTION AND HAVING A DOUBLE THICKNESS OF SAIDCONTAINER WALL MATERIAL, SAID SECOND PORTION HAVING AN UPWARDLYEXTENDING FIRST PART, A ROUNDED UPPER END AND AN INWARDLY EXTENDINGSECOND PART EXTENDING DOWNWARDLY AND INWARDLY FROM SAID ROUNDED END,SAID FIRST PORTION OF SAID OPENING NECK BEING CURVED OUTWARDLY AND SAIDSECOND PORTION EXTENDING OUTWARDLY FROM SAID CURVED PORTION IN FRUSTOCONICAL FORM AT AN ANGLE OF SUBSTANTIAL EXTEND WITH RESPECT TO THE AXISOF SAID OPENING, SAID CLOSURE ASSEMBLY HAVING A SECURING FORMATIONSECURED TO SAID OPENING NECK AND BEING CAPABLE OF PROVIDING VARIOUSSIZES AND TYPES OF POURING OPENINGS AND CLOSURES THEREFOR WITHIN THECONFINES OF SAID STANDARD OPENING AND SAID ASSEMBLY BEING FORMED FORAPPLICATION IN SECURED SEALED RELATIONSHIP TO SAID OPENING NECK FROM THEOUTSIDE OF COMPLETED CONTAINER AFTER THE SAME IS FILLED, SAID CLOSUREASSEMBLY INCLUDING A CLOSURE FLANGE AND A CLOSURE REMOVABLY SECUREDTHERETO, SAID FLANGE BEING FORMED AS AN ANNULAR MEMBER AND SAID SECURINGFORMATION FORMING THE PERIPHERAL PORTION OF SAID FLANGE, SAID SECURINGFORMATION HAVING AN UPWARDLY EXTENDING INNER PORTION OVERLYING THEROUNDED UPPER END OF SAID OPENING NECK, AN OUTER PORTION EXTENDINGDOWNWARDLY FROM SAID UPPER PORTION IN TIGHT ENGAGEMENT WITH THE OUTERPORTION OF SAID OPENING NECK TO FORM A TIGHT JOINT BETWEEN SAID NECK ANDSAID SECURING FORMATION ON THE OUTER SIDE OF THE WALL OF SAID CONTAINER,ANNULAR GASKET MEANS COMPRESSIVELY ENGAGED BETWEEN CONFRONTING ANNULARZONES OF THE SECURING FORMATION AND THE OPENING NECK OF THE CONTAINER,AN ANNULAR WEB EXTENDING INTEGRALLY RADIALLY INWARDLY FROM SAID SECURINGFORMATION, THE INNER PORTION OF THE SECURING FORMATION HAS A FIRST PARTWHICH RISES FROM THE OUTER EDGE OF THE WEB SUBSTANTIALLY NORMAL THERETOAND A SECOND PART OF GENERALLY FRUSTO CONICAL SHAPE WHICH IS PARALLEL TOAND CLOSELY OVERLIES THE FRUSTO CONICAL INNER SURFACE OF THE INNERSURFACE OF THE OPENING NECK OF THE CONTAINER, A NECK FORMED WITH ADISPENSING OPENING THERETHROUGH, SAID NECK EXTENDING FROM THE RADIALLYINNERMOST PORTION OF SAID WEB AND IN SPACED RELATION TO SAID SECURINGFORMATION, A GASKETING PORTION INTEGRAL WITH SAID NECK, A GASKETENGAGING SAID GASKETING PORTION, SAID CLOSURE INCLUDING MEANS FORENGAGING SAID GASKET FOR EFFECTING A LEAKPROOF JOINT BETWEEN THE CLOSUREAND THE NECK OF THE FLANGE OF THE CLOSURE ASSEMBLY.